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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Automatic Transmission - 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1761 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following system/component:
    • K71 Transmission Control Module
    • K9 Body Control Module
    • If no other DTCs are set 
    1. Ignition/Vehicle - Off
    2. Replace the component: K71 Transmission Control Module
    3. Operate the vehicle within the Conditions for Running the DTC.

      Verify the DTC does not set.

      • If the DTC sets - Replace the component: K9 Body Control Module
      • Go to next step: If the DTC is not set
    4. All OK.
    • Go to next step: If no DTC is set 
  3. All OK.
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